ABSTRACT
With the advent of the era of information, electronic technology is playing an increasingly important role in social life, the use of mold knowledge electric and electric design of electronic products has become an indispensable part of social life, especially in all kinds of sports, timer test performance athletes become an important tool. In many areas, the timer is widely used, such as in sports, timing alarm, the game’s countdown timer, trac lights, trac lights, pedestrian lights, also can be used as a variety of pills, tablets, capsules in specified time remind drug use, and so on, there is the visible timer in the present society is how important.
